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Author Topic: laptop temperature fluctuations  (Read 1295 times)

holt

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laptop temperature fluctuations
« on: December 13, 2019, 09:50 AM »
My dual-core HP laptop with Win 10 and 8 gb ram is about half a year old. Usually it runs lukewarm but sometimes it gets quite warm for no discernible reason; could that maybe be Norton running in the background?
Could I safely run VLC with two separate long-play videos at the same time for extended time periods without overheating it?
"This is the best bad idea we have, sir. By far." (cf. 'Argo' (2012))
« Last Edit: December 13, 2019, 10:21 AM by holt »

Shades

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Re: laptop temperature fluctuations
« Reply #1 on: December 13, 2019, 10:52 AM »
A laptop with a Dual Core processor in it is more than likely (much) older than 6 months.

Playing 2 videos at once is taxing, especially when these are compressed. And gets much more taxing when those videos are 1080p or higher. And usually the difference between 1080p and 720p on a laptop screen is barely noticeable.  Especially for a set of slightly less young eyes.

If possible, try to get both videos on your system and use software to separate what you want from both videos and combine these parts into a new video. That is less taxing for your laptop in the long run.

Did you also consider cleaning your laptop internally? Cruft and dust accumulates very quick in laptops in my experience. Especially when they are mostly used in carpeted areas or way worse, in bed. Such cruft prevents heat to escape out of your laptop and shortens it life span.

holt

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Re: laptop temperature fluctuations
« Reply #2 on: December 13, 2019, 11:06 AM »
A laptop with a Dual Core processor in it is more than likely (much) older than 6 months.

Playing 2 videos at once is taxing, especially when these are compressed. And gets much more taxing when those videos are 1080p or higher. And usually the difference between 1080p and 720p on a laptop screen is barely noticeable.  Especially for a set of slightly less young eyes.

If possible, try to get both videos on your system and use software to separate what you want from both videos and combine these parts into a new video. That is less taxing for your laptop in the long run.

Did you also consider cleaning your laptop internally? Cruft and dust accumulates very quick in laptops in my experience. Especially when they are mostly used in carpeted areas or way worse, in bed. Such cruft prevents heat to escape out of your laptop and shortens it life span.
They're all 480p or less, but I get your meaning. I'll avoid doing two at a time. 

How do you clean internally?
"This is the best bad idea we have, sir. By far." (cf. 'Argo' (2012))

tomos

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Re: laptop temperature fluctuations
« Reply #3 on: December 13, 2019, 11:41 AM »
How do you clean internally?
I have a dual core laptop -- it's a few years old.
Just this week I installed extra memory for it (upgraded from 8 to 16) -- bought a set of screwdrivers suitable for that kind of thing, and found a youtube video showing how to do the deed and went and did it.
Worked fine, I was surprised how little dust there was in it, but one of the intakes *was* clogged. There was another protective layer -- for the CPU etc -- underneath the back cover. I didnt bother taking that off (but what I could see under it looked fine...)

It now uses less memory than it did before (that stumped me) but more importantly, it has enough memory for me to e.g. play/stream a couple of videos simultaneously (note the CPU is an i5-5300U). The fan kicks in a lot less so the machine is definitely cooler, less stressed.
Tom

tomos

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Re: laptop temperature fluctuations
« Reply #4 on: December 13, 2019, 11:46 AM »
Usually it runs lukewarm but sometimes it gets quite warm for no discernible reason; could that maybe be Norton running in the background?
you can check the Task Manager or get something like Process Explorer (I use the portable version).
See screenshot, it will show the biggest user in tooltip, but while the CPU or memory is actually being hogged, you can sort by either of those columns and see which are the biggest users

Screenshot - 2019-12-13 , 18_47_57.jpglaptop temperature fluctuations
Tom

IainB

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Re: laptop temperature fluctuations
« Reply #5 on: December 14, 2019, 09:08 AM »
@holt:
Did you also consider cleaning your laptop internally? Cruft and dust accumulates very quick in laptops in my experience. Especially when they are mostly used in carpeted areas or way worse, in bed. Such cruft prevents heat to escape out of your laptop and shortens it life span.
@Shades gives good advice.

Thought these notes might be of some use: Laptop overheating or noisy fan - Cleaning the cooling system.

holt

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Re: laptop temperature fluctuations
« Reply #6 on: December 14, 2019, 05:02 PM »
@holt:
Did you also consider cleaning your laptop internally? Cruft and dust accumulates very quick in laptops in my experience. Especially when they are mostly used in carpeted areas or way worse, in bed. Such cruft prevents heat to escape out of your laptop and shortens it life span.
@Shades gives good advice.

Thought these notes might be of some use: Laptop overheating or noisy fan - Cleaning the cooling system.
My entire laptop feels unusually warm; I installed SpeedFan; it shows a red/yellow flame icon and 127C for 'Temp 2' (not sure what that is).
I shut down for half an hour and rebooted; feels much cooler; Temp 2 -ACPI ISA bus?- fluctuates between 127C and 35C; just instantly over and over. Chart readout shows spiking and square-waving between the two extremes; but laptop feels 'normal' (barely above room temp).

Edit: I skimmed IainB's most xlnt post Laptop overheating or noisy fan - Cleaning the cooling system.
I can't do all that, but I have in times past dust-cleaned the turbo fan on a video card before, a simple R&R job of pulling the cover plate. My HP laptop is only 10 or 12 months old. If it survives long enough for me to review how to pull backing plate & battery, maybe I can fix my laptop.
"This is the best bad idea we have, sir. By far." (cf. 'Argo' (2012))
« Last Edit: December 15, 2019, 03:12 AM by holt »

Shades

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Re: laptop temperature fluctuations
« Reply #7 on: December 15, 2019, 12:33 AM »
Speedfan is good software to keep track of temperatures in your computer. But not all computers are created equally, so Speedfan needs a database to keep track of hardware combinations and how it needs to read/apply temperature read-outs generated by these hardware combinations.

The author of Speedfan does his/her best to keep that database as relevant as he/she can, but it is near impossible to account for every hardware combination. Hence you get your weird read-outs. All authors of similar software have this problem, not just Speedfan. If Windows 10 has software like this build in, it is also plagued by the same problem. Keeping this type of software as up-to-date as you can, is the best thing to do.

Speedfan is capable of keeping track of temperatures from different devices in your computer. Even each separate core of your processor. Yet, these are not always configured by the laptop manufacturer in the same order, hence you'll see 'Temp 2', while you were likely to expect 'Temp' or 'Temp 1'. Whether that is a problem of the manufacturer or the interpretation of Speedfan...

If I remember correctly, Speedfan comes with reporting functionality, so it is possible to send them the information of your hardware combination and the author can then decide if/when support for your specific hardware combo will be included into a newer version of Speedfan.

holt

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Re: laptop temperature fluctuations
« Reply #8 on: December 15, 2019, 03:06 AM »
When I minimize SpeedFan, it totally vanishes and I cannot find its active icon on Desktop or anywhere although I know it is still there and did not actually close. I really need to figure out how to get the active instance of it back on-screen on Desktop, instead of starting a 2nd copy.

Edit: I will try the vacuum cleaner to air intake port, as per IainB's ^'overheating or noisy fan' post.
"This is the best bad idea we have, sir. By far." (cf. 'Argo' (2012))
« Last Edit: December 15, 2019, 03:13 AM by holt »

tomos

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Re: laptop temperature fluctuations
« Reply #9 on: December 15, 2019, 04:01 AM »
Edit: I will try the vacuum cleaner to air intake port, as per IainB's ^'overheating or noisy fan' post.
Note Shades's comments in related thread re static and being careful not to force fan blades to turn the wrong way.
I have used vacuum cleaner inside a desktop computer: I worked barefoot and half covered the nozzle with my fingers to minimise chances of static building up.
Tom

holt

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Re: laptop temperature fluctuations
« Reply #10 on: December 15, 2019, 11:33 AM »
I vacuumed air intake; no change or improvement in SpeedFan over-temp readout.
"This is the best bad idea we have, sir. By far." (cf. 'Argo' (2012))

holt

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Re: laptop temperature fluctuations
« Reply #11 on: December 15, 2019, 05:07 PM »
The laptop has a 5-year warranty through Amazon.com; I suppose that opening the back ccver plate might void the warranty. If so, might my only option be to just keep using it until it quits? Then the only bummer is rebuilding all my peripheral software in a new machine.
"This is the best bad idea we have, sir. By far." (cf. 'Argo' (2012))

Shades

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Re: laptop temperature fluctuations
« Reply #12 on: December 15, 2019, 06:00 PM »
I vacuumed air intake; no change or improvement in SpeedFan over-temp readout.

http://www.donationc....msg434398#msg434398

In that post I try to explain why you see such fluctuating temperature values.

Usually there is a model number on the bottom of the laptop. Chances are that there are more than one video showing you how to dismantle your laptop model. In my experience, HP is adequate in delivering manuals for their laptops. Manuals that include all the steps to dismantle your laptop. Reverse these steps in the order as described in their manual and you should be up and running again without issues.

Depending on the model of laptop, it can be the case that you need to remove the whole cover before you are able to upgrade RAM or hard disk. if so, you are in luck. The manufacturer designed it so that it should be relatively easy to remove the whole cover and you'll have the benefit of easy internal cleaning without voiding warranty. If you have a model laptop where RAM, hard disk etc., each have their own separate small cover plate, then internal cleaning is more of a hassle. Just look at the bottom of your laptop and you'll see it right away.

As I understand, your laptop is from HP, they are more often than not designed to be serviceable. Except for their low-end consumer models. If you have a business model laptop (from any brand), serviceability is always better than for their consumer model laptops. In general, if you are in the market for a laptop, get a business model. Sure, they might not look as "flashy" as a consumer model, and likely have a slightly higher purchase price, but when it comes to maintenance and (tech-)support, you will be much better off in the long run.

holt

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Re: laptop temperature fluctuations
« Reply #13 on: December 16, 2019, 10:11 PM »
I downloaded & installed HP Support Assistant.
I have a Model HP EliteBook Folio 9480m; Product number L2G98UC#ABA; maybe 1 1/2 years old.
HP 9470m Disassembly and fan cleaning video.
Disassembling an Elitebook HP 9470m (full disassembly not necessary but gives better lighting & visual clarity).

edit: re: Review HP EliteBook Folio 9470m Ultrabook
It says in summation near the bottom; "The fan can be cleaned easily."
"This is the best bad idea we have, sir. By far." (cf. 'Argo' (2012))
« Last Edit: December 17, 2019, 01:29 AM by holt »

holt

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Re: laptop temperature fluctuations
« Reply #14 on: December 17, 2019, 11:43 AM »
Edit: I will try the vacuum cleaner to air intake port, as per IainB's ^'overheating or noisy fan' post.
Note Shades's comments in related thread re static and being careful not to force fan blades to turn the wrong way.
I have used vacuum cleaner inside a desktop computer: I worked barefoot and half covered the nozzle with my fingers to minimise chances of static building up.
I take your meaning to be that spinning the fan blades the wrong way can ruin the fan.  :Thmbsup:
"This is the best bad idea we have, sir. By far." (cf. 'Argo' (2012))

IainB

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Re: laptop temperature fluctuations
« Reply #15 on: December 18, 2019, 05:57 AM »
@Holt:
I take your meaning to be that spinning the fan blades the wrong way can ruin the fan.
That might be what he means, but the pragmatic approach I took was:
1. If the fan runs on a frictionless (magnetic field) bearing (as seems to be the case)
2. Then running it backwards for short periods is not going to hurt it.
3. - but only IF the laptop battery has been removed, so there is no possibility that you will be forcing the fan to run backwards (by reverse suction) when it could already be running in the correct operational direction under battery power.

I haven't broken anything so far... :o

holt

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Re: laptop temperature fluctuations
« Reply #16 on: December 18, 2019, 03:42 PM »
What about a few shots of Duster in intake or exhaust; 'canned air'?
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IainB

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Re: laptop temperature fluctuations
« Reply #17 on: December 21, 2019, 10:19 AM »
@holt:
What about a few shots of Duster in intake or exhaust; 'canned air'?

Clean dust/dirt off the motherboard and other parts as you proceed inwards, using the paintbrush and vacuum cleaner on low suction. Using CO2 pressure cans to blow the dust off is arguably a waste of time as it tends to redistribute a lot of the dust (along with your money).

You need to remove the dust with a suction device.

Cleanliness is important. Dust and dirt are generally enemies of electronic or electromechanical devices, typically leading directly or indirectly to shorts or tracking in the former and shorts and/or friction problems in the latter.